Saw-set



J. ARLAND.-

(NoModeL) SAW SET.

Patented Juiy 31. 1883.

.No.2a2,304.

.WITJVESSES JNVENTOR N. PEYERS. Pmwlmm mv. Washingmn. 0. c.

UNITED STATES PATENT OFFicE.

JAMES. GARLAND, on PHILADELPHlA, PENNSYLVANIA.

SAW-SET.

SPECIFICATION forming part of Letters Patent No. 282,304, dated July 31, 1883.

i Application filed March 8, 1883. (No model.)

To a whom it may concern.-

Be it known that 1, JAMES GARLAND, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvementsin Saw-Sets, of which the following is a specification.

My invention consists of a saw-set constructed in the peculiar manner fully descnbed hereinafter, the objects of my invention being instrument.

' and the anvil asaw-tooth is bent or set.

Two levers, A and B, are pivoted together by apin, a, the long armsb Z) of the levers being formed for convenient manipulation. The short curved arm (1 of the lever -B terminates in an inwardly-projecting V-shaped anvil, e, and the shortarmf of the lever A forms the jaw by and between the inclined face of whici spring, h, tends to maintain the jaw and anvil apart from each other to the extent permitted by a projection, i, on the lever B, with which projection the jaw comes in contact when the long arms orhandles of the levers are released.

On the lever B is a lug or projection, m,

through which passes the threaded stem of a When the instrument is adjusted to a sawblade, the lips of the cheek-pieces bear on the teeth, one lip on one side and the other lip on the opposite side of the jaw and anvil-an arrangement which insures the lateral steadiness of the saw-set.

Guards for serving the same purpose as the guard G have been combined with saw-sets,

the under side of .the lips of the guard G, 6 being the above-mentioned anvil on the short arm of the lever B, f the jaw forming the short arm of the lever A, and having an 'inclined front face, 8, and y being part of a saw-blade, the upper toothed edge of which is between the anvil and jaw, the lips of the guard bearing on the said teeth and the inclined face of the said jaw having been forced against the side of one of theteeth, thereby bending it against the anvil and imparting to it the desired set, the extent of which will be determined by the inclination of the face 8 of the jaw f in respect to the face of the saw-blade. If,;for instance, the saw-blade be adjusted to the inclined position indicated by dotted lines, the tooth will be bent to a greater extent than if the blade should bein the vertical position indicated by plain lines 5 hence the adjusting-screw n, by which the relation of the sawblade to the inclined face of the jaw f may be altered at pleasure.

Adjusting devices other than the set-screw will readily suggest themselves to expert mechanics; but the set-screw is to be preferred on account of its simplicity.

More or less of each tooth of a saw-blade may require to be bent, as the character of the teeth and that of the desired set may suggest. It is the duty of the guard G to deter: mine how much of each tooth shall be bent, for

gram Fig. 5, in which the line t represents the toothed edge of the blade should always be in contact with the under side of the lips of the guard in operating the instrument, and the more these lips are depressed by manipulating the set-screw w the less will be the extent of the. portion of each tooth which is bent by the combined action of the jaw and anvil.

It will be observed that the action of the in clined face of the jaw,-in conjunction with the comparatively sharp edge of the anvil,is that of simply bending the tooth, and that there is no crushing or rubbing of the tooth against an extended base.

I claim-as my inventionone cheek-piece being on one side and the 1. A saw-set in which a lever, B, having a other'on the opposite side of said jaw and anshort arm provided with an inwardly-projectvil, and a set-screw, w, for adjusting the levering anvil, e, having a comparatively sharp guard, all substantially as set forth. v I 5 5 edge, is combined with a lever, A, having a In testimonywhereof I have signed myname jaw, f, with an inclined face, moving past the to this specification in the presence of two edge of the anvil, substantially as described. subscribing witnesses.

2. The combination of the lever B and its JAMES GARLAND. anvil e, the lever A, having a jaw, f, the lever- Witnesses: IO guard G, pivoted to the lever B, and having HARRY L. ASHENFELTER,

two cheek-pieces, each provided with a lip, t, I HENRY HowsoN, Jr. 

